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how to solve a cosine equation. X 360 I can use a trig identity to get a quadratic in cosine. The solution arcs x Pi4 kPi3.
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Solve 2sin 2 t-cos t1 for all solutions with 0le t. The general equation of a sine graph is y A sinBx - D C The general equation of a cosine graph is y A cosBx - D C. The first solution is 45 more than a multiple of 180 so 180n 45 should do.
B2 a2 c2 - 2ac cdot text cos 115circ b2 162 52 - 2 cdot 16 cdot 5text cos 115circ b2 3663 b sqrt 3663 b 6052467916095486.
2sin 2x37sin xxin02pi 3tan 3A-tan A0Ain 0360 2cos 2x-sqrt3cos x00circ lt xlt 360circ. X 360 I can use a trig identity to get a quadratic in cosine. Think abc. Isolate the expression tanx on the left side of the equals sign.
